Building construction



March 10,1936. v. YEAGER 2,033,751

BUILDING CONSTRUCTION Filed May 14, 1934 a 10J5 Ff 26 mv zin 11 54 W 7 A'i'TORNEY atented ar. 10,, 193d TEN roe 2 Elaims.

This invention relates to building constructions, and has reference more particularly to monolithic floor and ceiling constructions wherein building voids are supported upon structural members.

In the construction of floors and ceilings, the use of bar joists has become quite common because of their relatively low cost and high strength. In using bar joists or other structural members. it is desirable to construct a floor with cementitious floor voids in such a way that the bottoms of the voids present a smooth surface for the application of a coating of plaster, while the tops of the voids form a support for a iioor layer of poured cementitious material which also embeds the structural members.

An object of this invention, therefore, is. to provide a building construction for use in floors and ceilings which can'be erected with a minimum of labor, and which will combine high strength with a low cost of material; also to improve building constructions in other respects hereinafter specified and claimed.

Reference is to be had to the accompanying drawing forming part of this specification. in which Fig. 1 is a perspective view, partly in section, of my improved floor and ceiling construction.

Fig. 2 is a sectional elevation through a modified form of the floor and ceiling construction,

Fig. 3 is a sectional elevation through one of the cementitious voids used in the building construction. and

Fig. 4 is a sectional elevation through the building construction taken at right angles to the view shown in Fig. 2.

In constructing a floor and ceiling, beams iiiare supported at their ends on the frame work of the building. Said beams are preferably of steel and I-shaped, having lower flanges H and upper flanges l2. Bar joists l3 are arranged transversely of the beams l and comprise upper chords l4 and lower chords IS. The chords I4 and i5 are preferably I-bars and are connected together by means of obliquely extending barsl6 which are welded to said chords. The ends of the lower chords I 5 are bent upwardly to form oblique sections l'l, which in turn are then bent outwardly to form bearing sections I8, said sections being welded to the ends of the upper chords M. A cementitious body I9 is molded about the lower chords l5 and a small portion of the bars l6, said body presenting oppositely disposed shoulders 20. In the form of construction shown in Fig. 2, the height of the body i9 is approximately $4; of

the total height of the bar joist it. It should be understood that any other type of structural member may be used instead of the bar joist ii.

In order to fill the space between the bar joists it, I provide a fioor void it. which is composed 5 of an upper wall 23 and a lower wall it, the bottom surface it of which is substantially co-planar with the bottom surface of the body iii so as to present a fiat surface for the reception of a coating of plaster it. Longitudinal flanges 27 extend 1 along side walls it of the voids 22 shown in Fig. 2, said flanges it being arranged to engage the shoulders it to support the door void at the proper elevation. The side walls it are preferably inclined upwardly and by tilting the floor voids slightly. they can be inserted between the upper chords and then provide a maximum bearing surface between the flanges II and theshoulders 29.

A cementitious floor it is poured on top of the said shoe tiles being preferably'co-planar with the bottom surfaces of the bodies i9 and voids 22. One end of each void 22 is closed by a wall 32. It should be understood that any type of suitable cementitious material may be used for the voids 22, bodies It and floor, such as gypsum, concrete,

etc.

In the form of construction shown in Fig. 1, side walls 33 of the floor voids are arranged substantially parallel. In this form of construction, shoulders M on the floor voids engage shoul- 35 ders 35 on cementitious bodies 38. In this form of construction slightly less bearing surface is provided between the shoulders 36 and 35 as it is necessary to make the voids sufliciently narrow in width to pass'between the flanges of upper 40 chords 31.

I would state in conclusion that while the illustrated examples constitute practical embodiments of my invention, I do not wish to limit myself precise to these details, since manifestly, the same may be considerably varied without departing from the spirit of the invention as defined in the appended claims.

Having thus described my invention. I claim as new and desire to secure by Letters Patent:

1. In a building construction. a plurality of bar joists supported in spaced, parallel relation, said joists having upper and lower chords connected by oblique bars, a cementitious body molded about said lower chord and the lower portion of said bars, said body forming opposed shoulders. cementitious floor voids spanning a substantial distance between said bar joists and supported at each end on said shoulders, said voids extending below the top chords of said bar joists and extending below said bottom chords in co-planar relationship with the bottom of said body, a plaster layer applied to the bottom surface of said voids and bodies, and a cementitious floor poured above said voids and embedding the projecting top chords of said bar joists.

2. In a building construction, a plurality of bar joists supported in spaced, parallel relation, said joists having upper and lower chords connected by spacing bars, a cementitious body molded aboutsaid lower chord and the lower portion of said bars, said body forming opposed shoulders, cementitious floor voids spanning a substantial distance between said bar joists and supported at opposite points on said shoulders, said voids having at least a portion or their upper surfaces extending below the top chords of said bar joists and extending below said bottom chords in co-planar relationship with the bottom of said body, a cementitious layer applied to the bottom surface of said voids and bodies, and a cementitious floor poured above said voids and embedding the projecting top chords of said bar joists. 

